Alert archive / Colorado / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 137, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Aug 23, 1997, 3:46 PM MDT for Lincoln County, Colorado. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Aug 23, 1997, 3:46 PM MDT (21:46 UTC)
- Expired
- Aug 23, 1997, 4:15 PM MDT
- In force
- 29 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Lincoln County, CO
The radar
The Pueblo radar (KPUX), 100 km from the middle of the area, began a volume at 21:50 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 9.8 hours before the alert went out and 80 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 76 J/kg
- Mixed-layer CIN
- -271 J/kg
- Mixed-layer LCL
- 2322 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 232149 RRA
SVRDEN
COC073-232215-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
346 PM MDT SAT AUG 23 1997
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 415 PM MDT FOR PEOPLE IN THE
FOLLOWING COUNTIES...
IN EAST CENTRAL COLORADO
CENTRAL LINCOLN
INCLUDING THE FOLLOWING LOCATIONS
GENOA AND HUGO
AT 346 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 4 MILES SOUTH OF GENOA...OR ABOUT 11 MILES EAST
OF LIMON.
THE STORM WAS MOVING SOUTH AT 10 TO 15 MILES PER HOUR.
HAIL...INTENSE RAIN AND STRONG DAMAGING WINDS ARE LIKELY WITH THIS
STORM. TAKE COVER IN A SUBSTANTIAL SHELTER UNTIL THE STORM PASSES.
REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN DENVER.
LAT...LON 3912 10335 3903 10358 3926 10359 3934 10349
FMCWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Aug 23, 11:25 AM MDT, 4 hours 21 minutes before
COZ030-032>050-240600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1125 AM MDT SAT AUG 23 1997 THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES ADAMS ARAPAHOE BOULDER CLEAR CREEK DENVER DOUGLAS ELBERT GILPIN GRAND JACKSON JEFFERSON LARIMER LINCOLN LOGAN MORGAN PARK PHILLIPS SEDGWICK SUMMIT WASHINGTON WELD SYNOPSIS: STRONG HIGH PRESSURE WILL RESIDE OVER THE OUTLOOK AREA AGAIN TODAY. A SURFACE TROUGH OVER THE EASTERN PLAINS WILL CONTINUE TO DEVELOP THIS AFTERNOON KEEPING THE SURFACE MOISTURE HIGHEST NEAR THE EASTERN BORDER. DESPITE THE SUBSIDENT HIGH PRESSURE...ENOUGH SURFACE MOISTURE COUPLED WITH DAYTIME HEATING MAY PRODUCE A FEW THUNDERSTORMS AFTER 3PM. THUNDERSTORMS WILL INITIALLY DEVELOP OVER THE HIGH COUNTRY BEFORE MOVING ON TO THE LOWER ELEVATIONS. ANY THUNDERSTORMS THAT DO DEVELOP ARE NOT EXPECTED TO REACH SEVERE LEVELS...HOWEVER THUNDERSTORMS MAY PRODUCE GUSTY WINDS UP TO 30 MPH AND BRIEF HEAVY RAIN. SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY. FREDIN
Special weather statement, Aug 23, 11:29 AM MDT, 4 hours 17 minutes before
COZ030-032>050-240600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1125 AM MDT SAT AUG 23 1997 THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES ADAMS ARAPAHOE BOULDER CLEAR CREEK DENVER DOUGLAS ELBERT GILPIN GRAND JACKSON JEFFERSON LARIMER LINCOLN LOGAN MORGAN PARK PHILLIPS SEDGWICK SUMMIT WASHINGTON WELD SYNOPSIS: STRONG HIGH PRESSURE WILL RESIDE OVER THE OUTLOOK AREA AGAIN TODAY. A SURFACE TROUGH OVER THE EASTERN PLAINS WILL CONTINUE TO DEVELOP THIS AFTERNOON KEEPING THE SURFACE MOISTURE HIGHEST NEAR THE EASTERN BORDER. DESPITE THE SUBSIDENT HIGH PRESSURE...ENOUGH SURFACE MOISTURE COUPLED WITH DAYTIME HEATING MAY PRODUCE A FEW THUNDERSTORMS AFTER 3PM. THUNDERSTORMS WILL INITIALLY DEVELOP OVER THE HIGH COUNTRY BEFORE MOVING ON TO THE LOWER ELEVATIONS. ANY THUNDERSTORMS THAT DO DEVELhOP ARE NOT EXPECTED TO REACH SEVERE LEVELS...HOWEVER THUNDERSTORMS MAY PRODUCE GUSTY WINDS UP TO 30 MPH AND BRIEF HEAVY RAIN. SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY. FREDIN
Special weather statement, Aug 23, 3:20 PM MDT, 26 minutes before
COZ046-232215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 320 PM MDT SAT AUG 23 1997 ...STRONG THUNDERSTORM IN NORTH CENTRAL LINCOLN COUNTY... AT 317 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 6 MILES NORTH OF GENOA...OR ABOUT 13 MILES NORTHEAST OF LIMON. THE STORM WAS MOVING SOUTH AT 5 MILES PER HOUR. PERSONS IN OR NEAR GENOA A SPOTTER REPORTED MARBLE SIZED HAIL WITH THE STORM. IN ADDITION RADAR INDICATED THE STORM MAY HAVE PRODUCED UP TO 1 INCH OF RAINFALL. DANGEROUS LIGHTNING AND STRONG WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM. BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IMMIDIATELY. HEAVY RAINS MAY FLOOD LOW LYING AREAS. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS. FMC
Special weather statement, Aug 23, 3:23 PM MDT, 23 minutes before
COZ046-232215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 320 PM MDT SAT AUG 23 1997 ...STRONG THUNDERSTORM IN NORTH CENTRAL LINCOLN COUNTY... AT 317 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 6 MILES NORTH OF GENOA...OR ABOUT 13 MILES NORTHEAST OF LIMON. THE STORM WAS MOVING SOUTH AT 5 MILES PER HOUR. PERSONS IN OR NEAR GENOA A SPOTTER REPORTED MARBLE SIZED HAIL WITH THE STORM. IN ADDITION RADAR INDICATED THE STORM MAY HAVE PRODUCED UP TO 1 INCH OF RAINFALL. DANGEROUS LIGHTNING AND STRONG WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM. BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IMMIDIATELY. HEAVY RAINS MAY FLOOD LOW LYING AREAS. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS. FM:C
Special weather statement, Aug 23, 3:25 PM MDT, 21 minutes before
COZ046-232215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO...CORRECTED 325 PM MDT SAT AUG 23 1997 ...STRONG THUNDERSTORM IN NORTH CENTRAL LINCOLN COUNTY... AT 317 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 6 MILES NORTH OF GENOA...OR ABOUT 13 MILES NORTHEAST OF LIMON. THE STORM WAS MOVING SOUTH AT 5 MILES PER HOUR. A SPOTTER REPORTED MARBLE SIZED HAIL WITH THE STORM. IN ADDITION RADAR INDICATED THE STORM MAY HAVE PRODUCED UP TO 2 INCHES OF RAINFALL. DANGEROUS LIGHTNING AND STRONG WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM. PERSONS IN OR NEAR GENOA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IMMIDIATELY. HEAVY RAINS MAY FLOOD LOW LYING AREAS. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS. FMC
Special weather statement, Aug 23, 3:26 PM MDT, 20 minutes before
COZ046-232215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO...CORRECTED 325 PM MDT SAT AUG 23 1997 ...STRONG THUNDERSTORM IN NORTH CENTRAL LINCOLN COUNTY... AT 317 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 6 MILES NORTH OF GENOA...OR ABOUT 13 MILES NORTHEAST OF LIMON. THE STORM WAS MOVING SOUTH AT 5 MILES PER HOUR. A SPOTTER REPORTED MARBLE SIZED HAIL WITH THE STORM. IN ADDITION RADAR INDICATED THE STORM MAY HAVE PRODUCED UP TO 2 INCHES OF RAINFALL. DANGEROUS LIGHTNING AND STRONG WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM. PERSONS IN OR NEAR GENOA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IMMIDIATELY. HEAVY RAINS MAY FLOOD LOW LYING AREAS. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER GROUND IF THREATEbNED BY FLOOD WATERS. FMC
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 5:40 PM MDT | Severe Thunderstorm Warning | BOU | Sedgwick | 35 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 1997Every severe thunderstorm warning in 1997
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.